Ore-concentrator.



J. L. SIGNORETTE. ORB GO'NGENTRATOR.

APPLICATION FILED MAY 9, 1912. 1,098,183. Patented May 26, 1914.

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APPLIUATION FILED MA'YQ. 1912.

1,098, 1 83. Patented May 26, 1914.

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COLUMBIA PLANOURAPH CO..WASHINGTON. D( C.

Patented May 26, 1914.

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JOHN L. SIGNORETTE, 0F LGS NGELES, CALIFORNIA.

ORE-CONCENTBAEOR.

Specification of Letters Patent.

Patent-ea May se, wie.

Application led May 9, 1912. Serial No. 696,208.

This invention relates to improvements in j ore concentrators.

The principal object of the invention is to provide a device of this character including novel means for operating a shaking tray, in which the pulp is poured, to insure the proper sett-ling of the precious values.

Another object is to provide a novel means for operating an outlet valve to automatically draw off the settlings.

A further object is to provide a novel mea-ns agitating the pulp inthe tray, so that the precious Vvalues contained therein are separated therefrom and forced to settle to the bottom of the tray.

These and other objects will be apparent from the following description and with particular reference to the accompanying drawings.

In the drawings: Figure 1 is a side elevation of my device, Fig. 2 is a top plan view thereof, Fig. 3 is an end elevation, Fig. 4 is a vertical section on the line 4-4 of Fig. 2, and Fig. 5 is a section on the line 5f-5 of Fig. 2.

Referring particularly to the drawings, 10 represents the base, on one end of which are formed vertical uprights 11, 12 and 13 respectively. The base is provided with intermediate transversely extending supporting strips 14 and 15, on which are secured the blocks 16, there being four of these blocks. A longitudinally convexed tray 17 is disposed above the base, and has secured to its bottom the blocks 18, provided with the recesses 19, to receive the upper ends of the flattened spring supporting legs 20, the lower ends of said legs being secured to the before-mentioned blocks 16. The spring legs 2O are so arranged that the tray will vibrate or reciprocate longitudinally. At a point directly opposite the uprightl 11, on the other side of the base, is a similar upright 21, and in each one of these uprights is mounted an adjustable bolt 22, adjustable therethrough by means of the adjusting nut 23, each of said bolts having'a metal bumper head 24 on its inner end, for a purpose'tobe referred to later. Secured to the bottom of the tray and running longitudinally thereof is a bumper barr25, formed preferably of wood, and having the protecting metallic band 26 around the ends thereof, the ends of said bar being so disposed as to bump against the heads 24, when the trayV vibrates or reciprocates longitudinally, thereby suddenly checking and jarring the tray at each limit j of its movement, and securing the shaking up of the pulp within the tray and the effective settling of the precious values.

On the uprights 12 and `13 are the bearing blocks 27 andy 2S, in which blocks, is journaled a driving` shaft 29. @n one end of this shaft is mounted a slotted crank disk 30, and near the other end a tight pulley 31 and an idle pulley 32. @n the disk 30 is a wrist pin 33, to which is connected one'end of a connecting rod 34, the length of the stroke of the rod being regulated by means of the slotted disk 30. rIhe opposite end of the connecting rod is threaded as at 35, and passes through a perforated lugv 36 secured to the bottom of the tray, and on each side of the said lug are the adjusting nuts 37. On each side of the lug 36 and between the said lug and between each of the nuts 37 is a coil spring encircling the curved portion of the rod 34, the purpose of which will appear later.

In one of the vertical edges ofthe tray is a cutaway portion 39, which forms an overiiow for the tray, said cutaway portion being slightly offset as indicated at 40. At one side of the tray is arranged the end of a sluice 41 from which the pulp is fed to the tray. Extending longitudinally over the tray and secured at its ends to the uprights 11 and 21 respectively, is a bar 42, having a series of downwardly projecting fingers 43, the said fingers extending into the tray. Secured to thisbar is a rectangular frame, the longitudinal members 44 of which are similarly provided with fingers 45, and also extending into the tray. This frame and the bar 41 are held stationary, while the tray reciprocates therebeneath, the fingers 43 and 45 agitating the pulp within the tray, and

forcing any small particles of precious metal to separate from the pulp and sink to the bottom. In the center of the offset portion 40 is a sight opening 46, closed by means of' the glass plate 47, for the purpose of viewing the interior of the tray when it is desired to inspect the contents of the same, so that the valve 56 may be opened at the proper time.

ln the bottom of the tray near the opening 46 is an outlet opening for the settlings, and secured to the bottom of the tray is an apertured plate 49, the opening of which registers with the opening 48 in the tray. Pivoted on the bottom of the tray at the point 50 is an outwardly projecting lever or arm 51, having the curved portion 52 disposed directly beneath the plate 49 and provided with a boss 53, said boss having a rectangular opening 54 for the reception of the rece tangular stem 55 of a valve 56, said valve being of the plate type, and engaging tightly over the aperture of the pla-te 49, a spring -57 being disposed between the valve and the boss for holding said valve tightly against the plate 49. Secured to the offset side of the tray is a depending yoke-shaped guiding hanger 58, which supports the outer portion of the arm 51. Secured to the uprights 11 and 21 and extending therebetween is a yoke-shaped bar 59, having a flattened central portion G0, provided with a series of openings 61, for the reception of a pair of' stop plugs G2, said flattened portion of the bar being disposed directly beneath the outer end of the arm 51. By inserting the plugs G2 in the openings on opposite sides of the arm 51, said arm will engage with the plugs alternately, as the tray reaches the limit of its movement in either direction, so that said arm 51 is moved first one direction then the other to slide the valve 56, to cover and open the outlet opening 48.

1n the operation of the device, power is applied to the shaft 29 through the medium of the pulley 31, which rotates the crank disk 30 and causes the connecting rod 34 to impart a reciprocatory movement longitudinally of the tray. As the tray reaches each limit of its reciprocatory movement the bumper bar 25 engages with one of the heads 24, and is given a sudden jar which will shake up or agitate the contents of the tray, to separate the liner particles of precious metal and cause them to be precipitated to the bottom. As the tray is jarred at each end of its movement by the bumper bar Q5 striking the heads 24, the shock is taken up by the springs 38, so that a series of smaller reciprocations or vibrations are imparted to the tray between the main or positive vibrations. Thus the tray is given a sudden jar at each end of its movement, and a series of shorter vibrations immediately succeeding each end bump. At the same time the fingers 43 and 45 keep the pulp thoroughly agitated within the tray, so that during the operation of the device there are three distinct actions to cause the proper settling of the precious values to the bottom of the tray, namely: the bump at each end of the movement of the tray, the series of short vibrations caused by the springs 39, and fingers 43 and 45.

Particular attention is called to the fact that as the tray reciprocates the arm 51 is thrown in one direction or the other so that the valve will uncover the opening 48, and permit the settlings of precious values to pass out through the said opening, and by adjusting the plugs G2 in the various openings 61, the opening 48 may be uncovered to a greater or lesser extent. Furthermore, the shorter vibrations of' the tray produced by means of the springs 88 occur at the instant when the valve is closed or nearly closed, so that when the valve is opened, the settlings resulting from said shaking will quickly pass out through the openings.

lhat is claimed is:

1. In an ore concentrator, the combination with a base, of resilient supports carried by said base, a tray mounted on the supports, a longitudinally extending bumper bar connected with the bottom of the tray, a standard mounted on the base adjacent each end of the tray, resilient means for reciprocating the tray, means carried by the standards adapted to be engaged by the bumper bar during the reciprocation of the tray to jar such tray and independent adjusting devices for the resilient means and last mentioned means whereby the shock at either end of the reciprocation may be regulated.

2. In an ore concentrator, the combination with a base, of a tray resiliently supported upon the base, resilient means for reciprocating the tray, said means including a lug connected to thetray, a bar passing through said lug, springs surrounding said bar on each side of said lugs, nuts on the bar for adjusting the tension of the springs independently; a bumper bar connected with the tray, bumper heads engageable by the bumper bar, and means for independently adjusting the position of said heads.

In testimony whereof, I affix my signature, in presence of two witnesses.

JOHN L. SIGNORETTE.

lVitnesses t Manni. Molnvanvn, P. A. RHEINsoHiLD.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

